Conor McGregor
Sports scientists once marveled at McGregor’s incredible physical gifts. They should check if he shares any genes with cockroaches because he keeps coming back. The former UFC champion became the sport’s first true mainstream superstar. But he also made waves because of his antics outside of the cage (via NBC News).

McGregor infamously punched an older man in a bar because he didn’t want to drink his whiskey. He faced multiple sexual assault allegations and treats driving laws with contempt. The Irishman infamously stormed Brooklyn’s Barclay Center and damaged property. But the UFC keeps bringing him back to mainstream life because he is a major cash cow.